C.H. ยท C. Hammond
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| On Toby's Terms | 978-0-9843081-4-9 (0-9843081-4-8) | 2010 |
| Toby, the Pet Therapy Dog, and His Hospital Friends | 978-0-9836045-0-1 (0-9836045-0-9) | 2011 |
| Toby, the Pet Therapy Dog, Says Be a Buddy, Not a Bully | 978-0-9836045-5-6 (0-9836045-5-X) | 2013 |